diff --git a/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/impl/NetconfStreamThread.java b/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/impl/NetconfStreamThread.java
index e80e214..12eedfa 100644
--- a/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/impl/NetconfStreamThread.java
+++ b/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/impl/NetconfStreamThread.java
@@ -243,7 +243,7 @@
             try {
                 bufferReader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
             } catch (UnsupportedEncodingException e) {
-                e.printStackTrace();
+                throw new IllegalStateException(e);
             }
         }
 
diff --git a/protocols/rest/api/src/main/java/org/onosproject/protocol/http/ctl/HttpSBControllerImpl.java b/protocols/rest/api/src/main/java/org/onosproject/protocol/http/ctl/HttpSBControllerImpl.java
index c546c49..5e5ba37 100644
--- a/protocols/rest/api/src/main/java/org/onosproject/protocol/http/ctl/HttpSBControllerImpl.java
+++ b/protocols/rest/api/src/main/java/org/onosproject/protocol/http/ctl/HttpSBControllerImpl.java
@@ -377,7 +377,7 @@
                 }
             } }, new java.security.SecureRandom());
         } catch (NoSuchAlgorithmException | KeyManagementException e) {
-            e.printStackTrace();
+            throw new IllegalStateException(e);
         }
 
         return ClientBuilder.newBuilder().sslContext(sslcontext).hostnameVerifier((s1, s2) -> true).build();